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3 years ago

Use the grouping method to factor the polynomial below completely.

Mathematics

1 answer:

Paha777 [63]3 years ago

4 0

Answer:

(x²+5)(x+2)

simple find the common factor between x³ and 2x² and the cf of 5x and 10

u will end up with these results then^

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group of 30 students from your school is part of the audience for a TV game show the total number of people in the audience is 1

Soloha48 [4]

<h2>Answer:</h2><h2>The theoretical probability of four students from your school being selected as contestants out of 8 possible contestants spots = $\frac{14}{165}$ </h2>

Step-by-step explanation:

The number of students participated = 30

Total audience = 150

By probability , to find the solution = $\frac{n(E)}{n(S)}$

where n(E) is the number of favorable outcomes,

n(S) is the number of total outcomes.

n(S) is the number of ways any 8 students can by picked from the audience= $\frac{8}{140}$

n(E) is the probability of picking four students from our school and five students from another school.

n(E) = $(\frac{4}{30}) (\frac{4}{110})$ = $\frac{16}{3300}$

$\frac{n(E)}{n(S)}$ = $\frac{\frac{16}{3300}}{\frac{8}{140}}$ = $\frac{14}{165}$

7 0

3 years ago

Um ônibus escola pode transporta ete 32 alunos quantos ônibus iguais são necessários para transportar 1 120 alunos

avanturin [10]

Answer:

sorry i dont know what the answer is

Step-by-step explanation:

3 0

3 years ago

Using Cramer's Rule, what is the value of x in the system of linear equations below?

Luden [163]

Answer:

Step-by-step explanation:

We find the determinant of a matrix by the method below. If we have a matrix:

$\left[\begin{array}{cc}a&b\\c&d\end{array}\right]$

The determinant is $ad-bc$

Now, using cramer's rule, we find x-value by the formula:

$x=\frac{D_x}{D}$

Where D is the determinant of the original problem and $D_x$ is the determinant of the x-value matrix. How do we get those?

<u><em>To get original matrix and thus D, we set up the matrix as the coefficients of x and y (s) of both the equations and to get matrix of x-value and thus $D_x$ , we replace the x values of the matrix with the numbers in the right hand side of the 2 equations.</em></u> We show this below:

<em />

$\left[\begin{array}{cc}3&4\\1&-6\end{array}\right] \\D=(3)(-6)-(1)(4)=-18-4=-22$